Measurement of the Top Quark Mass in the Di-lepton Channel using the Dalitz-Goldstein Method

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This dissertation describes a measurement of the mass of the top quark using a method developed by G. Goldstein and R.H. Dalitz. It is based on 2.0 fb{sup -1} of data collected by the Collider Detector Facility at Fermi National Accelerator Laboratories. Di-lepton events were observed from colliding protons with anti-protons with {radical}s = 1.96 TeV in the Tevatron Collider. A total of 145 candidate events were observed with 49 expected to be from background. These events include two neutrinos which elude detection. The method begins by assuming an initial top quark mass and solves for the neutrino momenta using ... continued below

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160 pages

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Hare, Matthew Frederick & U., /Tufts October 1, 2010.

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Description

This dissertation describes a measurement of the mass of the top quark using a method developed by G. Goldstein and R.H. Dalitz. It is based on 2.0 fb{sup -1} of data collected by the Collider Detector Facility at Fermi National Accelerator Laboratories. Di-lepton events were observed from colliding protons with anti-protons with {radical}s = 1.96 TeV in the Tevatron Collider. A total of 145 candidate events were observed with 49 expected to be from background. These events include two neutrinos which elude detection. The method begins by assuming an initial top quark mass and solves for the neutrino momenta using a geometrical construction. The method samples over a range of likely top quark masses choosing the most consistent mass via a likelihood function. An important distinguishing feature of this method from others is its lack of dependence on the missing transverse energy, a quantity that is poorly measured by the experiment. This analysis determines the top quark mass to be M{sub top} = 172.3 {+-} 3.4(stat.) {+-} 2.0(syst.) GeV/c{sup 2} (M{sub top} = 170.5 {+-} 3.7(stat.) {+-} 1.8(syst.) GeV/c{sup 2} with b-tagging).

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160 pages

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  • Report No.: FERMILAB-THESIS-2010-64
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/1018349 | External Link
  • Office of Scientific & Technical Information Report Number: 1018349
  • Archival Resource Key: ark:/67531/metadc847010

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Office of Scientific & Technical Information Technical Reports

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  • October 1, 2010

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  • May 19, 2016, 3:16 p.m.

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  • Aug. 30, 2016, 3:31 p.m.

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Hare, Matthew Frederick & U., /Tufts. Measurement of the Top Quark Mass in the Di-lepton Channel using the Dalitz-Goldstein Method, thesis or dissertation, October 1, 2010; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc847010/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.